Fabric Manager Users Guide, Version 6.1, Revision A - QLogic

3–Fabric Manager Configuration
Configuring the QLogic Fabric Manager
Table 3-7. Sm Multicast Routing Parameters (Continued)
MLIDShare
Parameter
MulticastGroup
Default
Value
Description
Describes a set of MGIDs which may
share a common pool of Multicast LIDs.
Such sharing permits control over conservation
of Multicast LIDs. See Table 3-8
for the parameters that can be used
within each MLIDShare subsection. Up
to 32 MLIDShare subsections are
allowed.
Describes a set of multicast groups which
should be pre-created by the SM. See
Table 3-8 for the parameters that can be
used within each MulticastGroup subsection.
This subsection can be used
multiple times with each occurrence
specifying a different set of multicast
groups to be created.
EnablePruning 0 Should multicast spanning tree be pruned
to its minimal size.
When disabled (0), multicast join and
leave is optimized by building the spanning
tree to include all switches, such that
a Host Channel Adapter join/leave only
requires a single switch update
When enabled (1), multicast traffic will
only propagate through the minimal set of
switches, reducing overhead in the fabric
Recommend to be disabled (0) for typical
fabrics where multicast is mainly used to
support IPoIB ARP.
IB0054608-01 B 3-23